Effects of Metal–Support Interaction in the Electrocatalysis of the Hydrogen Evolution Reaction of the Metal-Decorated Titanium Dioxide Supported Carbon

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dc.contributor.authorOmetto, Felipe Berto
dc.contributor.authorPaganin, Valdecir Antonio
dc.contributor.authorHammer, Peter [UNESP]
dc.contributor.authorTicianelli, Edson Antonio
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T16:04:03Z
dc.date.available2023-07-29T16:04:03Z
dc.date.issued2023-01-01
dc.description.abstractIt has been found that the electrocatalytic properties of metallic nanoparticles supported on transition metal oxides are affected by the existing strong metal–support interaction (SMSI). Herein, the effects of SMSI on the electrocatalysis of the hydrogen evolution reaction (HER) were investigated in acid electrolyte by using Pt and Ag nanoparticles supported on carbon and titanium oxide (TiO2). High-resolution transmission electron microscopy (HR–TEM) images showed that Pt and Ag nanoparticles present a spherical shape at the TiO2 support and an average size distribution of around 4.5 nm. The X-ray photoelectron spectroscopy (XPS) results for Pt/TiO2/C and Ag/TiO2/C evidenced higher amounts of surface oxides in the metallic particles, when compared to the materials supported on carbon. Consistently, electrode polarization and electrochemical impedance results revealed that both metal–TiO2 and metal–C-supported catalysts were more active in catalyzing the HER than the corresponding carbon-supported materials, with Pt presenting better results. These differences in the HER activities were related to the electronic effects of the TiO2/C substrate on the Pt and Ag metals, introduced by strong metal-support (SMSI) in the metal–TiO2/C catalysts.en
dc.description.affiliationInstitute of Chemistry São Paulo University (USP), Av. Trabalhador São Carlense, 400
dc.description.affiliationInstitute of Chemistry São Paulo State University (UNESP), Rua Prof. Francisco Degni, 55
dc.description.affiliationUnespInstitute of Chemistry São Paulo State University (UNESP), Rua Prof. Francisco Degni, 55
dc.identifierhttp://dx.doi.org/10.3390/catal13010022
dc.identifier.citationCatalysts, v. 13, n. 1, 2023.
dc.identifier.doi10.3390/catal13010022
dc.identifier.issn2073-4344
dc.identifier.scopus2-s2.0-85146808403
dc.identifier.urihttp://hdl.handle.net/11449/249597
dc.language.isoeng
dc.relation.ispartofCatalysts
dc.sourceScopus
dc.subjectactivity-property correlations
dc.subjectcharge transfer
dc.subjectdecoration effects
dc.subjecthydrogen evolution reaction
dc.subjectsupport effects
dc.titleEffects of Metal–Support Interaction in the Electrocatalysis of the Hydrogen Evolution Reaction of the Metal-Decorated Titanium Dioxide Supported Carbonen
dc.typeArtigo
unesp.author.orcid0000-0002-3823-0050[3]

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Artigos - Físico Química - IQ